let instance = axios.create()
instance.defaults.baseURL = 'http://127.0.0.1:8888'
instance.defaults.headers['Content-Type'] = 'multipart/form-data'
instance.defaults.transformRequest = (data, headers) => {
    const contentType = headers['Content-Type']
    if (contentType === 'application/x-www-form-urlencoded') return Qs.stringify(data)
    return data
}
instance.interceptors.response.use(response => {
    return response.data
})
